It is reported that LG Display and Samsung Display have completed the development of serial OLEDoS technology prototypes to achieve higher brightness

According to news from this website on July 30, according to Korean media "Sisa Journal e", South Korea's two major display companies LG Display and Samsung Display have both completed the development of tandem (Tandem) OLEDoS technology, and prototype products have also been Launched internally. The two Korean companies plan to promote the commercial mass production of Tandem OLEDoS at the right time, aiming to establish technological advantages in the field of head-mounted display panels. Tandem OLED is a display technology containing at least 2 organic material light-emitting layers, which can effectively solve the problem of OLED panels. It has the problems of lower brightness and shorter lifespan, and its energy efficiency is also higher than traditional single-layer OLEDs. OLEDoS is silicon-based OLED, also known as microOLED. It uses silicon wafers to replace glass panels and can increase the resolution to thousands of PPI, which is especially suitable for devices such as XR headsets. Apple’s Vision Pro headset uses a microOLED panel. The combination of Tandem OLED and OLEDoS technologies can further improve the display effect of the head-mounted display device and extend the battery life of the device. This site noticed that on the Tandem OLEDoS technology route, the Japan Semiconductor Energy Research Institute has previously demonstrated a 1.5-inch screen sample. The sample has a pixel density of 3207 PPI, a brightness of 15,000 nits, and a 90Hz refresh rate.

▲ Sample from Japan Semiconductor Energy Research Institute. Source Guillaume Chansin In terms of conventional tandem OLEDs, LG Display and Samsung Display have become tandem OLED panel suppliers for Apple’s new generation iPad Pro. LG Display has also launched a series of tandem OLED panels for cars and notebooks.
The report quoted industry insiders as saying that Samsung Display’s large-size QD-OLED display panels can also introduce tandem OLED technology. However, Samsung Display did not successfully develop materials that meet specific application needs until early this year.

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